CLAS physics database search results Measurement E209M38 CLAS12 RG-K K+Y recoil polarization Daniel S. Carman 2025 W P^0_y Data errors Systematic errors GeV 1.64 -0.1442 0.047 0.0174 1.72 -0.0103 0.0246 0.0173 1.8 -0.0168 0.0253 0.0173 1.88 -0.0408 0.0303 0.0173 1.96 -0.0818 0.0419 0.0173 2.04 -0.2003 0.0612 0.0175 2.12 0.0896 0.0799 0.0173 2.2 0.3036 0.1101 0.0177 2.28 0.189 0.1454 0.0174 2.36 0.5605 0.2327 0.0186